Joanna, you do not have to check the source code of the engine. Since all custom constraints are implemented as stevedore plugins, this section of setup.cfg [1] gives you the full list of constraints available in the main code tree. Other resource / client plugins (like those in contrib) might add additional constraints.
Joanna, you do not have to check the source code of the engine. Since all custom constraints are implemented as stevedore plugins, this section of setup.cfg [1] gives you the full list of constraints available in the main code tree. Other resource / client plugins (like those in contrib) might add additional constraints.
[1] https:/ /github. com/openstack/ heat/blob/ master/ setup.cfg# L60-L74